Okay...I'm at wits end here. I love my car, but whenever it's cold outside, or there's any chance of percipitation in the air, my car windows fog up! It usually starts at the windshield, then to the corners of my windows in the front where my mirrors are at and then it completely envelopes my whole car. If I get my windshield to clear up, I switch it over to my windows, but then my windshield fogs up quickly. I have to continuously use my AC because my vent makes matters worse! I've taken it to a car dealership, who adjusted my drivers door, but it hasn't done anything. I also notice a moldy smell every once in awhile. They sprayed stuff in my vents, but it is still there! I can't afford to have them sanitize my vents. Please help!

 

Well. Simply put. You have a leak somewhere...You might want to check in the trunk. Mine had a leak behind the rear brake light. So pull the carpet back in any low spot in the car and feel for moisture. Thats why your car is fogging up. It shouldn't be your vents; if it were your vents the moldy smell would come from them...Try every spot you can think of under the carpeting of the car. Water can build up on the floor and the carpet may not even look wet. You might have a leak by the door. If you can find water then from there follow the moisture back to the source...Let me know whats happening. I'll try and help. I've dealt with foggy windows like that before...Hope this helps.